.pr {
  position: relative !important;
}

.pa {
  position: absolute !important;
}
.tran_center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.ver_center {
  top: 50%;
  transform: translateY(-50%);
}
.level_center {
  left: 50%;
  transform: translateX(-50%);
}


